
4Based on three, insulated copper conductors in steel conduit:
60°C wire when the total unit ampacity is below 100 amps;
75°C wire when the total unit ampacity is 100 amps and above.
5Based on a 3% voltage drop.
ELECTRICAL DATA
OUTDOOR UNIT
Model
EFB Compressor Outdoor Fan Motor Min.
Circuit
Amps
Max.
Fuse
Size
Min. Wire
Size,1
AWG Max. Wire
Length2, (ft.)
Power
Supply RLA LRA Power
Factor Power
Supply Qty. FLA
(Each)
090A
25 200/230-3-60 32.1 195.0 0.94 @ 208V 208/230-1-60 1 3.6 43.7 70 8 130 @ 208V
0.84 @ 230V 144 @ 230V
46 460-3-60 16.4 95.0 0.86 460-1-60 1 1.7 22.2 35 12 235
50 308/415-3-50 16.4 86/95 0.86 @ 380V 380/415-1-50 1 1.7 22.2 35 12 194 @ 380V
0.80 @ 415V 212 @ 415V
120A
25 208/230-3-60 34.6 300.0 0.95 @ 208V 208/230-1-60 2 3.0 49.3 80 8 163 @ 208V
0.86 @ 230V 180 @ 230V
46 460-3-60 19.2 146.0 0.86 460-1-60 2 1.8 27.6 45 10 264
50 380/415-3-50 19.2 146.0 0.87 @ 380V 380/415-1-50 2 1.8 27.6 45 10 218 @ 380V
0.80 @ 415V 238 @ 415V
1Based on three, 60°C insulated copper conductors in steel conduit.
2Based on a 3% voltage drop.
INDOOR UNIT HEAT PUMP WITH ELECTRIC HEAT1
Nominal
Heater
KW2Power
Supply Heater
FLA Total Unit
Ampacity
AMPS
Max. Fuse
Size,3
AMPS
Min Wire
Size,4
AWG
Max. Wire
Length5
(Ft.)
F3EH090
10
208-3-60 20.8 32.6 35 8 144
230-3-60 24.1 37.4 40 8 139
460-3-60 12.0 18.4 20 12 226
380-3-50 9.5 16.0 20 12 215
415-3-50 10.4 18.0 20 12 209
16
208-3-60 33.4 48.4 50 6 152
230-3-60 38.5 55.4 60 4 235
460-3-60 19.2 27.4 30 10 242
380-3-50 15.2 23.1 25 10 237
415-3-50 16.6 25.8 30 10 232
26
208-3-60 54.2 74.4 80 3 198
230-3-60 62.5 85.4 90 2 244
460-3-60 31.3 42.5 45 6 382
380-3-50 24.8 35.1 40 8 244
415-3-50 27.0 38.8 40 8 241
36
208-3-60 75.1 100.5 110 2 188
230-3-60 86.6 115.5 125 1 226
460-3-60 43.3 57.5 60 4 452
380-3-50 34.3 48.0 50 6 280
415-3-50 37.4 51.8 60 6 283
F3EH120
10
208-3-60 20.8 35.4 40 8 133
230-3-60 24.1 38.6 40 8 134
460-3-60 12.0 19.3 20 12 216
380-3-50 9.5 16.9 20 12 203
415-3-50 10.4 18.6 20 12 202
16
208-3-60 33.4 51.1 60 6 144
230-3-60 38.5 56.6 60 4 230
460-3-60 19.2 28.3 30 10 235
380-3-50 15.2 24.0 25 10 229
415-3-50 16.6 26.4 30 10 227
26
208-3-60 54.2 77.1 80 3 191
230-3-60 62.5 86.6 90 2 241
460-3-60 31.3 43.4 45 6 374
380-3-50 24.8 36.0 40 8 238
415-3-50 27.0 39.4 40 8 238
36
208-3-60 75.1 103.3 110 2 183
230-3-60 86.6 116.7 125 1 224
460-3-60 43.3 58.4 60 4 445
380-3-50 34.3 47.9 50 6 280
415-3-50 37.4 52.4 60 6 280
1Unit with an electric heat accessory will always be wired for a single power supply.
2Refer to the HEATING CAPACITY table on page 5 for the actual KW and MBH ratings of
each heater at the different voltages.
3Inverse time circuit breakers may be used in lieu of dual element, time delay fuses.
HEAT PUMP ONLY
Blower
Motor
HP Power
Supply FLA Max.
Fuse
Size,1
AMPS
Max.
Wire
Length2
(Ft.)
F3EH090
1-1/2
208-3-60 5.3 10 207
230-3-60 5.8 10 209
460-3-60 2.7 5 897
380-3-50 3.3 5 606
415-3-50 4.0 5 546
F3EH120
2
208-3-60 7.5 10 146
230-3-60 6.8 10 178
460-3-60 3.4 5 712
380-3-50 4.0 5 500
415-3-50 4.5 5 485
1Dual element, time delay fuses.
2Based on three 60°C, 14 AWG, insulated copper conductors
in steel conduit, a 3% voltage drop.
Wire Size Max. Total
Circuit Length, (Ft.)
#19 Solid 130
#18 Solid 170
#18 Stranded 180
#16 Stranded 270
#14 Stranded 455
#12 Stranded 730
CONTROL WIRE SIZING
To determine the total circuit length, add the
following distances:
1 - Outdoor Unit to Indoor Unit
2 - Indoor Unit to Thermostat
3 - Thermostat to Indoor Unit
4 - Indoor Unit to Outdoor Unit
Total Circuit Length
Unitary Products Group
5005 York Drive, Norman, Oklahoma 73069
Subject to change without notice. Printed in U.S.A.
Copyright by York International Corporation 1997. All Rights Reserved. Code: EBY, EGY, EBI 515.41 TG1Y
Supersedes: 515-41-TG1Y(297)